AirHint found the following cheapest return flights from London (LHR) to Hanoi (HAN) in January 2026 (see full year).

Return flights

07 Jan - 18 Jan	Air China
12 Jan - 23 Jan	Air China
08 Jan - 19 Jan	Air China
08 Jan - 21 Jan	Air China
10 Jan - 21 Jan	Air China
01 Jan - 23 Jan	Air China
04 Jan - 26 Jan	Air China
14 Jan - 21 Jan	Air China
06 Jan - 20 Jan	Air China
07 Jan - 21 Jan	Air China
30 Jan - 27 Feb	Air China
01 Jan - 12 Feb	China Southern
23 Jan - 02 Feb	China Southern
25 Jan - 05 Feb	China Southern
24 Jan - 02 Feb	China Southern
09 Jan - 02 Feb	China Southern
24 Jan - 07 Feb	Air China
17 Jan - 02 Feb	China Southern
23 Jan - 04 Feb	China Southern
21 Jan - 11 Feb	China Southern

Also check the deals for one-way flights from London to Hanoi in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Hanoi in January from 527€

Return flights